Improvement in millstone-balances



lUNITED TATE ATENT OFFICE.

IMPROVEMENT IN NIILLSTONE-BALANCES.

Specification forming part of Letters Patent N0. 160,864, dated March 16, 1875 application filed November 28,1874,

To all whom t may concern.'

Be it known that I, JOHN A. ALTHoUsE, of New Harmony, in thev county of Posey and State of Indiana, have invented a new and valuable Improvement in MillstoneBalances and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a partv of this specication, and to the letters and figures of reference marked thereon.

Figure l of the drawing, is a representation of front elevation of my millstone-balance. Fig. 2 is a top view of the same; and Fig. 3 is a side view of the same.

This invention has relation to an improvement in Letters Patent granted to me, No. 114,249, and dated May 2, 1871, for balancing millstones; and it consists in novel means of applying Weights to the circumference of a runner-stone, whereby such weights can be adjusted, for causing the stone to run true, as will be hereinafter explained.

In the annexed drawings, A designates the upper stone or runner, which is surrounded by a band, a, in the usual well-known manner, and B B B designate blocks of iron or other metal, which are adapted to lie closely in contact with the band a, and which have grooves a in their outer surfaces. C C C designate straps, which have T-shaped heads b on their ends, which heads have slots through them, and they are at right angles to the lengthof the straps. The weight B and its strap (l are arranged near the upper edge of the band a, and the two weights Bl B and their straps C C are arranged near the lower edge of the band a.. The straps are arranged equal distances apart, and are rigidly secured to the band a by means of set-screws c c o. By loosening the screws c the straps O with the weights B can be adjusted vertically, and, if desired, the weights can be adjusted in the direction of the length of their straps.

.barely touches the back of the stone.

In applying my balance I first level up the bed-stone, tighten the spindle in the usual way, tram the spindle to the bed-stone, and then put on the runner-stone A. I put two thin boards of equal thickness between the burrs, let the runner down on them, iill up under the ends ofthe boards, and secure them so that they cannot fly out when the stone is in motion. I next put a rest across the back of it, high enough to allow the stone to run free. When this is done I stop the burrs, take the boards from between them, put the burrs in motion up to the grinding-speed, raised high enough to clear the bed-stone, then take a pencil and move it down 011 the rest so thatit I then stop the stone and find the center of the mark or line on the back ot' the stone, divide the circumference ot' the stone into three equal parts from the center of said line. Then put the upper weight B so that it comes even with the top of the burr opposite the center of the pencil-mark. The other two weights are put opposite the other two points, two inches from the bottom of the burr. The burrs are again started, and it will be found that the niark has changed. By raising or lowering the weights, as the case may require, the burr can be brought to a perfect running balance, and at the saine time retain the standing balance.

Vhat I claim as new, and desire to secure by Letters Patent, is-

The vertically-adjustable T-shaped slotted strap C, in combination with the horizontallyadjustable weight B, provided with the groove c', substantially as described.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

JOHN A. ALTHOUSE. Witnesses:

L. F. RUcHr, D. ALTHOUsE. 

